const _typeof =
  typeof Symbol && 'symbol' == typeof Symbol.iterator
    ? function (obj) {
        return typeof obj;
      }
    : function (obj) {
        return obj &&
          'function' == typeof Symbol &&
          obj.constructor === Symbol &&
          obj !== Symbol.prototype
          ? 'symbol'
          : typeof obj;
      };

// https://github.com/bgrins/TinyColor
// Brian Grinstead, MIT License

var trimLeft = /^\s+/;
var trimRight = /\s+$/;
function tinycolor(color, opts) {
  color = color ? color : '';
  opts = opts || {};

  // If input is already a tinycolor, return itself
  if (color instanceof tinycolor) {
    return color;
  }
  // If we are called as a function, call using new instead
  if (!(this instanceof tinycolor)) {
    return new tinycolor(color, opts);
  }
  var rgb = inputToRGB(color);
  (this._originalInput = color),
    (this._r = rgb.r),
    (this._g = rgb.g),
    (this._b = rgb.b),
    (this._a = rgb.a),
    (this._roundA = Math.round(100 * this._a) / 100),
    (this._format = opts.format || rgb.format);
  this._gradientType = opts.gradientType;

  // Don't let the range of [0,255] come back in [0,1].
  // Potentially lose a little bit of precision here, but will fix issues where
  // .5 gets interpreted as half of the total, instead of half of 1
  // If it was supposed to be 128, this was already taken care of by `inputToRgb`
  if (this._r < 1) this._r = Math.round(this._r);
  if (this._g < 1) this._g = Math.round(this._g);
  if (this._b < 1) this._b = Math.round(this._b);
  this._ok = rgb.ok;
}
tinycolor.prototype = {
  isDark: function isDark() {
    return this.getBrightness() < 128;
  },
  isLight: function isLight() {
    return !this.isDark();
  },
  isValid: function isValid() {
    return this._ok;
  },
  getOriginalInput: function getOriginalInput() {
    return this._originalInput;
  },
  getFormat: function getFormat() {
    return this._format;
  },
  getAlpha: function getAlpha() {
    return this._a;
  },
  getBrightness: function getBrightness() {
    //http://www.w3.org/TR/AERT#color-contrast
    var rgb = this.toRgb();
    return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
  },
  getLuminance: function getLuminance() {
    //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
    var rgb = this.toRgb();
    var RsRGB, GsRGB, BsRGB, R, G, B;
    RsRGB = rgb.r / 255;
    GsRGB = rgb.g / 255;
    BsRGB = rgb.b / 255;
    if (RsRGB <= 0.03928) R = RsRGB / 12.92;
    else R = Math.pow((RsRGB + 0.055) / 1.055, 2.4);
    if (GsRGB <= 0.03928) G = GsRGB / 12.92;
    else G = Math.pow((GsRGB + 0.055) / 1.055, 2.4);
    if (BsRGB <= 0.03928) B = BsRGB / 12.92;
    else B = Math.pow((BsRGB + 0.055) / 1.055, 2.4);
    return 0.2126 * R + 0.7152 * G + 0.0722 * B;
  },
  setAlpha: function setAlpha(value) {
    this._a = boundAlpha(value);
    this._roundA = Math.round(100 * this._a) / 100;
    return this;
  },
  toHsv: function toHsv() {
    var hsv = rgbToHsv(this._r, this._g, this._b);
    return {
      h: hsv.h * 360,
      s: hsv.s,
      v: hsv.v,
      a: this._a,
    };
  },
  toHsvString: function toHsvString() {
    var hsv = rgbToHsv(this._r, this._g, this._b);
    var h = Math.round(hsv.h * 360),
      s = Math.round(hsv.s * 100),
      v = Math.round(hsv.v * 100);
    return this._a == 1
      ? 'hsv(' + h + ', ' + s + '%, ' + v + '%)'
      : 'hsva(' + h + ', ' + s + '%, ' + v + '%, ' + this._roundA + ')';
  },
  toHsl: function toHsl() {
    var hsl = rgbToHsl(this._r, this._g, this._b);
    return {
      h: hsl.h * 360,
      s: hsl.s,
      l: hsl.l,
      a: this._a,
    };
  },
  toHslString: function toHslString() {
    var hsl = rgbToHsl(this._r, this._g, this._b);
    var h = Math.round(hsl.h * 360),
      s = Math.round(hsl.s * 100),
      l = Math.round(hsl.l * 100);
    return this._a == 1
      ? 'hsl(' + h + ', ' + s + '%, ' + l + '%)'
      : 'hsla(' + h + ', ' + s + '%, ' + l + '%, ' + this._roundA + ')';
  },
  toHex: function toHex(allow3Char) {
    return rgbToHex(this._r, this._g, this._b, allow3Char);
  },
  toHexString: function toHexString(allow3Char) {
    return '#' + this.toHex(allow3Char);
  },
  toHex8: function toHex8(allow4Char) {
    return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
  },
  toHex8String: function toHex8String(allow4Char) {
    return '#' + this.toHex8(allow4Char);
  },
  toRgb: function toRgb() {
    return {
      r: Math.round(this._r),
      g: Math.round(this._g),
      b: Math.round(this._b),
      a: this._a,
    };
  },
  toRgbString: function toRgbString() {
    return this._a == 1
      ? 'rgb(' +
          Math.round(this._r) +
          ', ' +
          Math.round(this._g) +
          ', ' +
          Math.round(this._b) +
          ')'
      : 'rgba(' +
          Math.round(this._r) +
          ', ' +
          Math.round(this._g) +
          ', ' +
          Math.round(this._b) +
          ', ' +
          this._roundA +
          ')';
  },
  toPercentageRgb: function toPercentageRgb() {
    return {
      r: Math.round(bound01(this._r, 255) * 100) + '%',
      g: Math.round(bound01(this._g, 255) * 100) + '%',
      b: Math.round(bound01(this._b, 255) * 100) + '%',
      a: this._a,
    };
  },
  toPercentageRgbString: function toPercentageRgbString() {
    return this._a == 1
      ? 'rgb(' +
          Math.round(bound01(this._r, 255) * 100) +
          '%, ' +
          Math.round(bound01(this._g, 255) * 100) +
          '%, ' +
          Math.round(bound01(this._b, 255) * 100) +
          '%)'
      : 'rgba(' +
          Math.round(bound01(this._r, 255) * 100) +
          '%, ' +
          Math.round(bound01(this._g, 255) * 100) +
          '%, ' +
          Math.round(bound01(this._b, 255) * 100) +
          '%, ' +
          this._roundA +
          ')';
  },
  toName: function toName() {
    if (this._a === 0) {
      return 'transparent';
    }
    if (this._a < 1) {
      return false;
    }
    return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
  },
  toFilter: function toFilter(secondColor) {
    var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
    var secondHex8String = hex8String;
    var gradientType = this._gradientType ? 'GradientType = 1, ' : '';
    if (secondColor) {
      var s = tinycolor(secondColor);
      secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
    }
    return (
      'progid:DXImageTransform.Microsoft.gradient(' +
      gradientType +
      'startColorstr=' +
      hex8String +
      ',endColorstr=' +
      secondHex8String +
      ')'
    );
  },
  toString: function toString(format) {
    var formatSet = !!format;
    format = format || this._format;
    var hasAlpha = this._a < 1 && this._a >= 0;
    var needsAlphaFormat =
      !formatSet &&
      hasAlpha &&
      (format === 'hex' ||
        format === 'hex6' ||
        format === 'hex3' ||
        format === 'hex4' ||
        format === 'hex8' ||
        format === 'name');
    if (needsAlphaFormat) {
      // Special case for "transparent", all other non-alpha formats
      // will return rgba when there is transparency.
      if (format === 'name' && this._a === 0) {
        return this.toName();
      }
      return this.toRgbString();
    }
    if (format === 'rgb') {
      return this.toRgbString();
    } else if (format === 'prgb') {
      return this.toPercentageRgbString();
    } else if (format === 'hex' || format === 'hex6') {
      if (hasAlpha) {
        return this.toHex8String();
      }
      return this.toHexString();
    } else if (format === 'hex3') {
      if (hasAlpha) {
        return this.toHex8String(true);
      }
      return this.toHexString(true);
    } else if (format === 'hex4') {
      return this.toHex8String(true);
    } else if (format === 'hex8') {
      return this.toHex8String();
    } else if (format === 'name') {
      return this.toName() || this.toHexString();
    } else if (format === 'hsl') {
      return this.toHslString();
    } else if (format === 'hsv') {
      return this.toHsvString();
    }
    return this.toHexString();
  },
  clone: function clone() {
    return tinycolor(this.toString());
  },
  _applyModification: function _applyModification(fn, args) {
    var color = fn.apply(null, [this].concat([].slice.call(args)));
    this._r = color._r;
    this._g = color._g;
    this._b = color._b;
    this.setAlpha(color._a);
    return this;
  },
  lighten: function lighten() {
    return this._applyModification(_lighten, arguments);
  },
  brighten: function brighten() {
    return this._applyModification(_brighten, arguments);
  },
  darken: function darken() {
    return this._applyModification(_darken, arguments);
  },
  desaturate: function desaturate() {
    return this._applyModification(_desaturate, arguments);
  },
  saturate: function saturate() {
    return this._applyModification(_saturate, arguments);
  },
  greyscale: function greyscale() {
    return this._applyModification(_greyscale, arguments);
  },
  spin: function spin() {
    return this._applyModification(_spin, arguments);
  },
  _applyCombination: function _applyCombination(fn, args) {
    return fn.apply(null, [this].concat([].slice.call(args)));
  },
  analogous: function analogous() {
    return this._applyCombination(_analogous, arguments);
  },
  complement: function complement() {
    return this._applyCombination(_complement, arguments);
  },
  monochromatic: function monochromatic() {
    return this._applyCombination(_monochromatic, arguments);
  },
  splitcomplement: function splitcomplement() {
    return this._applyCombination(_splitcomplement, arguments);
  },
  // Disabled until https://github.com/bgrins/TinyColor/issues/254
  // polyad: function (number) {
  //   return this._applyCombination(polyad, [number]);
  // },
  triad: function triad() {
    return this._applyCombination(polyad, [3]);
  },
  tetrad: function tetrad() {
    return this._applyCombination(polyad, [4]);
  },
};

// If input is an object, force 1 into "1.0" to handle ratios properly
// String input requires "1.0" as input, so 1 will be treated as 1
tinycolor.fromRatio = function (color, opts) {
  if (_typeof(color) == 'object') {
    var newColor = {};
    for (var i in color) {
      if (Object.prototype.hasOwnProperty.call(color, i)) {
        if (i === 'a') {
          newColor[i] = color[i];
        } else {
          newColor[i] = convertToPercentage(color[i]);
        }
      }
    }
    color = newColor;
  }
  return tinycolor(color, opts);
};

// Given a string or object, convert that input to RGB
// Possible string inputs:
//
//     "red"
//     "#f00" or "f00"
//     "#ff0000" or "ff0000"
//     "#ff000000" or "ff000000"
//     "rgb 255 0 0" or "rgb (255, 0, 0)"
//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
//
function inputToRGB(color) {
  var rgb = {
    r: 0,
    g: 0,
    b: 0,
  };
  var a = 1;
  var s = null;
  var v = null;
  var l = null;
  var ok = false;
  var format = false;
  if (typeof color == 'string') {
    color = stringInputToObject(color);
  }
  if (_typeof(color) == 'object') {
    if (
      isValidCSSUnit(color.r) &&
      isValidCSSUnit(color.g) &&
      isValidCSSUnit(color.b)
    ) {
      rgb = rgbToRgb(color.r, color.g, color.b);
      ok = true;
      format = String(color.r).substr(-1) === '%' ? 'prgb' : 'rgb';
    } else if (
      isValidCSSUnit(color.h) &&
      isValidCSSUnit(color.s) &&
      isValidCSSUnit(color.v)
    ) {
      s = convertToPercentage(color.s);
      v = convertToPercentage(color.v);
      rgb = hsvToRgb(color.h, s, v);
      ok = true;
      format = 'hsv';
    } else if (
      isValidCSSUnit(color.h) &&
      isValidCSSUnit(color.s) &&
      isValidCSSUnit(color.l)
    ) {
      s = convertToPercentage(color.s);
      l = convertToPercentage(color.l);
      rgb = hslToRgb(color.h, s, l);
      ok = true;
      format = 'hsl';
    }
    if (Object.prototype.hasOwnProperty.call(color, 'a')) {
      a = color.a;
    }
  }
  a = boundAlpha(a);
  return {
    ok: ok,
    format: color.format || format,
    r: Math.min(255, Math.max(rgb.r, 0)),
    g: Math.min(255, Math.max(rgb.g, 0)),
    b: Math.min(255, Math.max(rgb.b, 0)),
    a: a,
  };
}

// Conversion Functions
// --------------------

// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>

// `rgbToRgb`
// Handle bounds / percentage checking to conform to CSS color spec
// <http://www.w3.org/TR/css3-color/>
// *Assumes:* r, g, b in [0, 255] or [0, 1]
// *Returns:* { r, g, b } in [0, 255]
function rgbToRgb(r, g, b) {
  return {
    r: bound01(r, 255) * 255,
    g: bound01(g, 255) * 255,
    b: bound01(b, 255) * 255,
  };
}

// `rgbToHsl`
// Converts an RGB color value to HSL.
// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
// *Returns:* { h, s, l } in [0,1]
function rgbToHsl(r, g, b) {
  r = bound01(r, 255);
  g = bound01(g, 255);
  b = bound01(b, 255);
  var max = Math.max(r, g, b),
    min = Math.min(r, g, b);
  var h,
    s,
    l = (max + min) / 2;
  if (max == min) {
    h = s = 0; // achromatic
  } else {
    var d = max - min;
    s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
    switch (max) {
      case r:
        h = (g - b) / d + (g < b ? 6 : 0);
        break;
      case g:
        h = (b - r) / d + 2;
        break;
      case b:
        h = (r - g) / d + 4;
        break;
    }
    h /= 6;
  }
  return {
    h: h,
    s: s,
    l: l,
  };
}

// `hslToRgb`
// Converts an HSL color value to RGB.
// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
// *Returns:* { r, g, b } in the set [0, 255]
function hslToRgb(h, s, l) {
  var r, g, b;
  h = bound01(h, 360);
  s = bound01(s, 100);
  l = bound01(l, 100);
  function hue2rgb(p, q, t) {
    if (t < 0) t += 1;
    if (t > 1) t -= 1;
    if (t < 1 / 6) return p + (q - p) * 6 * t;
    if (t < 1 / 2) return q;
    if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
    return p;
  }
  if (s === 0) {
    r = g = b = l; // achromatic
  } else {
    var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
    var p = 2 * l - q;
    r = hue2rgb(p, q, h + 1 / 3);
    g = hue2rgb(p, q, h);
    b = hue2rgb(p, q, h - 1 / 3);
  }
  return {
    r: r * 255,
    g: g * 255,
    b: b * 255,
  };
}

// `rgbToHsv`
// Converts an RGB color value to HSV
// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
// *Returns:* { h, s, v } in [0,1]
function rgbToHsv(r, g, b) {
  r = bound01(r, 255);
  g = bound01(g, 255);
  b = bound01(b, 255);
  var max = Math.max(r, g, b),
    min = Math.min(r, g, b);
  var h,
    s,
    v = max;
  var d = max - min;
  s = max === 0 ? 0 : d / max;
  if (max == min) {
    h = 0; // achromatic
  } else {
    switch (max) {
      case r:
        h = (g - b) / d + (g < b ? 6 : 0);
        break;
      case g:
        h = (b - r) / d + 2;
        break;
      case b:
        h = (r - g) / d + 4;
        break;
    }
    h /= 6;
  }
  return {
    h: h,
    s: s,
    v: v,
  };
}

// `hsvToRgb`
// Converts an HSV color value to RGB.
// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
// *Returns:* { r, g, b } in the set [0, 255]
function hsvToRgb(h, s, v) {
  h = bound01(h, 360) * 6;
  s = bound01(s, 100);
  v = bound01(v, 100);
  var i = Math.floor(h),
    f = h - i,
    p = v * (1 - s),
    q = v * (1 - f * s),
    t = v * (1 - (1 - f) * s),
    mod = i % 6,
    r = [v, q, p, p, t, v][mod],
    g = [t, v, v, q, p, p][mod],
    b = [p, p, t, v, v, q][mod];
  return {
    r: r * 255,
    g: g * 255,
    b: b * 255,
  };
}

// `rgbToHex`
// Converts an RGB color to hex
// Assumes r, g, and b are contained in the set [0, 255]
// Returns a 3 or 6 character hex
function rgbToHex(r, g, b, allow3Char) {
  var hex = [
    pad2(Math.round(r).toString(16)),
    pad2(Math.round(g).toString(16)),
    pad2(Math.round(b).toString(16)),
  ];

  // Return a 3 character hex if possible
  if (
    allow3Char &&
    hex[0].charAt(0) == hex[0].charAt(1) &&
    hex[1].charAt(0) == hex[1].charAt(1) &&
    hex[2].charAt(0) == hex[2].charAt(1)
  ) {
    return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
  }
  return hex.join('');
}

// `rgbaToHex`
// Converts an RGBA color plus alpha transparency to hex
// Assumes r, g, b are contained in the set [0, 255] and
// a in [0, 1]. Returns a 4 or 8 character rgba hex
function rgbaToHex(r, g, b, a, allow4Char) {
  var hex = [
    pad2(Math.round(r).toString(16)),
    pad2(Math.round(g).toString(16)),
    pad2(Math.round(b).toString(16)),
    pad2(convertDecimalToHex(a)),
  ];

  // Return a 4 character hex if possible
  if (
    allow4Char &&
    hex[0].charAt(0) == hex[0].charAt(1) &&
    hex[1].charAt(0) == hex[1].charAt(1) &&
    hex[2].charAt(0) == hex[2].charAt(1) &&
    hex[3].charAt(0) == hex[3].charAt(1)
  ) {
    return (
      hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0)
    );
  }
  return hex.join('');
}

// `rgbaToArgbHex`
// Converts an RGBA color to an ARGB Hex8 string
// Rarely used, but required for "toFilter()"
function rgbaToArgbHex(r, g, b, a) {
  var hex = [
    pad2(convertDecimalToHex(a)),
    pad2(Math.round(r).toString(16)),
    pad2(Math.round(g).toString(16)),
    pad2(Math.round(b).toString(16)),
  ];
  return hex.join('');
}

// `equals`
// Can be called with any tinycolor input
tinycolor.equals = function (color1, color2) {
  if (!color1 || !color2) return false;
  return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
};
tinycolor.random = function () {
  return tinycolor.fromRatio({
    r: Math.random(),
    g: Math.random(),
    b: Math.random(),
  });
};

// Modification Functions
// ----------------------
// Thanks to less.js for some of the basics here
// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>

function _desaturate(color, amount) {
  amount = amount === 0 ? 0 : amount || 10;
  var hsl = tinycolor(color).toHsl();
  hsl.s -= amount / 100;
  hsl.s = clamp01(hsl.s);
  return tinycolor(hsl);
}
function _saturate(color, amount) {
  amount = amount === 0 ? 0 : amount || 10;
  var hsl = tinycolor(color).toHsl();
  hsl.s += amount / 100;
  hsl.s = clamp01(hsl.s);
  return tinycolor(hsl);
}
function _greyscale(color) {
  return tinycolor(color).desaturate(100);
}
function _lighten(color, amount) {
  amount = amount === 0 ? 0 : amount || 10;
  var hsl = tinycolor(color).toHsl();
  hsl.l += amount / 100;
  hsl.l = clamp01(hsl.l);
  return tinycolor(hsl);
}
function _brighten(color, amount) {
  amount = amount === 0 ? 0 : amount || 10;
  var rgb = tinycolor(color).toRgb();
  rgb.r = Math.max(0, Math.min(255, rgb.r - Math.round(255 * -(amount / 100))));
  rgb.g = Math.max(0, Math.min(255, rgb.g - Math.round(255 * -(amount / 100))));
  rgb.b = Math.max(0, Math.min(255, rgb.b - Math.round(255 * -(amount / 100))));
  return tinycolor(rgb);
}
function _darken(color, amount) {
  amount = amount === 0 ? 0 : amount || 10;
  var hsl = tinycolor(color).toHsl();
  hsl.l -= amount / 100;
  hsl.l = clamp01(hsl.l);
  return tinycolor(hsl);
}

// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
// Values outside of this range will be wrapped into this range.
function _spin(color, amount) {
  var hsl = tinycolor(color).toHsl();
  var hue = (hsl.h + amount) % 360;
  hsl.h = hue < 0 ? 360 + hue : hue;
  return tinycolor(hsl);
}

// Combination Functions
// ---------------------
// Thanks to jQuery xColor for some of the ideas behind these
// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>

function _complement(color) {
  var hsl = tinycolor(color).toHsl();
  hsl.h = (hsl.h + 180) % 360;
  return tinycolor(hsl);
}
function polyad(color, number) {
  if (isNaN(number) || number <= 0) {
    throw new Error('Argument to polyad must be a positive number');
  }
  var hsl = tinycolor(color).toHsl();
  var result = [tinycolor(color)];
  var step = 360 / number;
  for (var i = 1; i < number; i++) {
    result.push(
      tinycolor({
        h: (hsl.h + i * step) % 360,
        s: hsl.s,
        l: hsl.l,
      })
    );
  }
  return result;
}
function _splitcomplement(color) {
  var hsl = tinycolor(color).toHsl();
  var h = hsl.h;
  return [
    tinycolor(color),
    tinycolor({
      h: (h + 72) % 360,
      s: hsl.s,
      l: hsl.l,
    }),
    tinycolor({
      h: (h + 216) % 360,
      s: hsl.s,
      l: hsl.l,
    }),
  ];
}
function _analogous(color, results, slices) {
  results = results || 6;
  slices = slices || 30;
  var hsl = tinycolor(color).toHsl();
  var part = 360 / slices;
  var ret = [tinycolor(color)];
  for (hsl.h = (hsl.h - ((part * results) >> 1) + 720) % 360; --results; ) {
    hsl.h = (hsl.h + part) % 360;
    ret.push(tinycolor(hsl));
  }
  return ret;
}
function _monochromatic(color, results) {
  results = results || 6;
  var hsv = tinycolor(color).toHsv();
  var h = hsv.h,
    s = hsv.s,
    v = hsv.v;
  var ret = [];
  var modification = 1 / results;
  while (results--) {
    ret.push(
      tinycolor({
        h: h,
        s: s,
        v: v,
      })
    );
    v = (v + modification) % 1;
  }
  return ret;
}

// Utility Functions
// ---------------------

tinycolor.mix = function (color1, color2, amount) {
  amount = amount === 0 ? 0 : amount || 50;
  var rgb1 = tinycolor(color1).toRgb();
  var rgb2 = tinycolor(color2).toRgb();
  var p = amount / 100;
  var rgba = {
    r: (rgb2.r - rgb1.r) * p + rgb1.r,
    g: (rgb2.g - rgb1.g) * p + rgb1.g,
    b: (rgb2.b - rgb1.b) * p + rgb1.b,
    a: (rgb2.a - rgb1.a) * p + rgb1.a,
  };
  return tinycolor(rgba);
};

// Readability Functions
// ---------------------
// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)

// `contrast`
// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
tinycolor.readability = function (color1, color2) {
  var c1 = tinycolor(color1);
  var c2 = tinycolor(color2);
  return (
    (Math.max(c1.getLuminance(), c2.getLuminance()) + 0.05) /
    (Math.min(c1.getLuminance(), c2.getLuminance()) + 0.05)
  );
};

// `isReadable`
// Ensure that foreground and background color combinations meet WCAG2 guidelines.
// The third argument is an optional Object.
//      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
//      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.

// *Example*
//    tinycolor.isReadable("#000", "#111") => false
//    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
tinycolor.isReadable = function (color1, color2, wcag2) {
  var readability = tinycolor.readability(color1, color2);
  var wcag2Parms, out;
  out = false;
  wcag2Parms = validateWCAG2Parms(wcag2);
  switch (wcag2Parms.level + wcag2Parms.size) {
    case 'AAsmall':
    case 'AAAlarge':
      out = readability >= 4.5;
      break;
    case 'AAlarge':
      out = readability >= 3;
      break;
    case 'AAAsmall':
      out = readability >= 7;
      break;
  }
  return out;
};

// `mostReadable`
// Given a base color and a list of possible foreground or background
// colors for that base, returns the most readable color.
// Optionally returns Black or White if the most readable color is unreadable.
// *Example*
//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
tinycolor.mostReadable = function (baseColor, colorList, args) {
  var bestColor = null;
  var bestScore = 0;
  var readability;
  var includeFallbackColors, level, size;
  args = args || {};
  includeFallbackColors = args.includeFallbackColors;
  level = args.level;
  size = args.size;
  for (var i = 0; i < colorList.length; i++) {
    readability = tinycolor.readability(baseColor, colorList[i]);
    if (readability > bestScore) {
      bestScore = readability;
      bestColor = tinycolor(colorList[i]);
    }
  }
  if (
    tinycolor.isReadable(baseColor, bestColor, {
      level: level,
      size: size,
    }) ||
    !includeFallbackColors
  ) {
    return bestColor;
  } else {
    args.includeFallbackColors = false;
    return tinycolor.mostReadable(baseColor, ['#fff', '#000'], args);
  }
};

// Big List of Colors
// ------------------
// <https://www.w3.org/TR/css-color-4/#named-colors>
var names = (tinycolor.names = {
  aliceblue: 'f0f8ff',
  antiquewhite: 'faebd7',
  aqua: '0ff',
  aquamarine: '7fffd4',
  azure: 'f0ffff',
  beige: 'f5f5dc',
  bisque: 'ffe4c4',
  black: '000',
  blanchedalmond: 'ffebcd',
  blue: '00f',
  blueviolet: '8a2be2',
  brown: 'a52a2a',
  burlywood: 'deb887',
  burntsienna: 'ea7e5d',
  cadetblue: '5f9ea0',
  chartreuse: '7fff00',
  chocolate: 'd2691e',
  coral: 'ff7f50',
  cornflowerblue: '6495ed',
  cornsilk: 'fff8dc',
  crimson: 'dc143c',
  cyan: '0ff',
  darkblue: '00008b',
  darkcyan: '008b8b',
  darkgoldenrod: 'b8860b',
  darkgray: 'a9a9a9',
  darkgreen: '006400',
  darkgrey: 'a9a9a9',
  darkkhaki: 'bdb76b',
  darkmagenta: '8b008b',
  darkolivegreen: '556b2f',
  darkorange: 'ff8c00',
  darkorchid: '9932cc',
  darkred: '8b0000',
  darksalmon: 'e9967a',
  darkseagreen: '8fbc8f',
  darkslateblue: '483d8b',
  darkslategray: '2f4f4f',
  darkslategrey: '2f4f4f',
  darkturquoise: '00ced1',
  darkviolet: '9400d3',
  deeppink: 'ff1493',
  deepskyblue: '00bfff',
  dimgray: '696969',
  dimgrey: '696969',
  dodgerblue: '1e90ff',
  firebrick: 'b22222',
  floralwhite: 'fffaf0',
  forestgreen: '228b22',
  fuchsia: 'f0f',
  gainsboro: 'dcdcdc',
  ghostwhite: 'f8f8ff',
  gold: 'ffd700',
  goldenrod: 'daa520',
  gray: '808080',
  green: '008000',
  greenyellow: 'adff2f',
  grey: '808080',
  honeydew: 'f0fff0',
  hotpink: 'ff69b4',
  indianred: 'cd5c5c',
  indigo: '4b0082',
  ivory: 'fffff0',
  khaki: 'f0e68c',
  lavender: 'e6e6fa',
  lavenderblush: 'fff0f5',
  lawngreen: '7cfc00',
  lemonchiffon: 'fffacd',
  lightblue: 'add8e6',
  lightcoral: 'f08080',
  lightcyan: 'e0ffff',
  lightgoldenrodyellow: 'fafad2',
  lightgray: 'd3d3d3',
  lightgreen: '90ee90',
  lightgrey: 'd3d3d3',
  lightpink: 'ffb6c1',
  lightsalmon: 'ffa07a',
  lightseagreen: '20b2aa',
  lightskyblue: '87cefa',
  lightslategray: '789',
  lightslategrey: '789',
  lightsteelblue: 'b0c4de',
  lightyellow: 'ffffe0',
  lime: '0f0',
  limegreen: '32cd32',
  linen: 'faf0e6',
  magenta: 'f0f',
  maroon: '800000',
  mediumaquamarine: '66cdaa',
  mediumblue: '0000cd',
  mediumorchid: 'ba55d3',
  mediumpurple: '9370db',
  mediumseagreen: '3cb371',
  mediumslateblue: '7b68ee',
  mediumspringgreen: '00fa9a',
  mediumturquoise: '48d1cc',
  mediumvioletred: 'c71585',
  midnightblue: '191970',
  mintcream: 'f5fffa',
  mistyrose: 'ffe4e1',
  moccasin: 'ffe4b5',
  navajowhite: 'ffdead',
  navy: '000080',
  oldlace: 'fdf5e6',
  olive: '808000',
  olivedrab: '6b8e23',
  orange: 'ffa500',
  orangered: 'ff4500',
  orchid: 'da70d6',
  palegoldenrod: 'eee8aa',
  palegreen: '98fb98',
  paleturquoise: 'afeeee',
  palevioletred: 'db7093',
  papayawhip: 'ffefd5',
  peachpuff: 'ffdab9',
  peru: 'cd853f',
  pink: 'ffc0cb',
  plum: 'dda0dd',
  powderblue: 'b0e0e6',
  purple: '800080',
  rebeccapurple: '663399',
  red: 'f00',
  rosybrown: 'bc8f8f',
  royalblue: '4169e1',
  saddlebrown: '8b4513',
  salmon: 'fa8072',
  sandybrown: 'f4a460',
  seagreen: '2e8b57',
  seashell: 'fff5ee',
  sienna: 'a0522d',
  silver: 'c0c0c0',
  skyblue: '87ceeb',
  slateblue: '6a5acd',
  slategray: '708090',
  slategrey: '708090',
  snow: 'fffafa',
  springgreen: '00ff7f',
  steelblue: '4682b4',
  tan: 'd2b48c',
  teal: '008080',
  thistle: 'd8bfd8',
  tomato: 'ff6347',
  turquoise: '40e0d0',
  violet: 'ee82ee',
  wheat: 'f5deb3',
  white: 'fff',
  whitesmoke: 'f5f5f5',
  yellow: 'ff0',
  yellowgreen: '9acd32',
});

// Make it easy to access colors via `hexNames[hex]`
var hexNames = (tinycolor.hexNames = flip(names));

// Utilities
// ---------

// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
function flip(o) {
  var flipped = {};
  for (var i in o) {
    if (Object.prototype.hasOwnProperty.call(o, i)) {
      flipped[o[i]] = i;
    }
  }
  return flipped;
}

// Return a valid alpha value [0,1] with all invalid values being set to 1
function boundAlpha(a) {
  a = parseFloat(a);
  if (isNaN(a) || a < 0 || a > 1) {
    a = 1;
  }
  return a;
}

// Take input from [0, n] and return it as [0, 1]
function bound01(n, max) {
  if (isOnePointZero(n)) n = '100%';
  var processPercent = isPercentage(n);
  n = Math.min(max, Math.max(0, parseFloat(n)));

  // Automatically convert percentage into number
  if (processPercent) {
    n = parseInt(n * max, 10) / 100;
  }

  // Handle floating point rounding errors
  if (Math.abs(n - max) < 0.000001) {
    return 1;
  }

  // Convert into [0, 1] range if it isn't already
  return (n % max) / parseFloat(max);
}

// Force a number between 0 and 1
function clamp01(val) {
  return Math.min(1, Math.max(0, val));
}

// Parse a base-16 hex value into a base-10 integer
function parseIntFromHex(val) {
  return parseInt(val, 16);
}

// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
function isOnePointZero(n) {
  return typeof n == 'string' && n.indexOf('.') != -1 && parseFloat(n) === 1;
}

// Check to see if string passed in is a percentage
function isPercentage(n) {
  return typeof n === 'string' && n.indexOf('%') != -1;
}

// Force a hex value to have 2 characters
function pad2(c) {
  return c.length == 1 ? '0' + c : '' + c;
}

// Replace a decimal with it's percentage value
function convertToPercentage(n) {
  if (n <= 1) {
    n = n * 100 + '%';
  }
  return n;
}

// Converts a decimal to a hex value
function convertDecimalToHex(d) {
  return Math.round(parseFloat(d) * 255).toString(16);
}
// Converts a hex value to a decimal
function convertHexToDecimal(h) {
  return parseIntFromHex(h) / 255;
}
var matchers = (function () {
  // <http://www.w3.org/TR/css3-values/#integers>
  var CSS_INTEGER = '[-\\+]?\\d+%?';

  // <http://www.w3.org/TR/css3-values/#number-value>
  var CSS_NUMBER = '[-\\+]?\\d*\\.\\d+%?';

  // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
  var CSS_UNIT = '(?:' + CSS_NUMBER + ')|(?:' + CSS_INTEGER + ')';

  // Actual matching.
  // Parentheses and commas are optional, but not required.
  // Whitespace can take the place of commas or opening paren
  var PERMISSIVE_MATCH3 =
    '[\\s|\\(]+(' +
    CSS_UNIT +
    ')[,|\\s]+(' +
    CSS_UNIT +
    ')[,|\\s]+(' +
    CSS_UNIT +
    ')\\s*\\)?';
  var PERMISSIVE_MATCH4 =
    '[\\s|\\(]+(' +
    CSS_UNIT +
    ')[,|\\s]+(' +
    CSS_UNIT +
    ')[,|\\s]+(' +
    CSS_UNIT +
    ')[,|\\s]+(' +
    CSS_UNIT +
    ')\\s*\\)?';
  return {
    CSS_UNIT: new RegExp(CSS_UNIT),
    rgb: new RegExp('rgb' + PERMISSIVE_MATCH3),
    rgba: new RegExp('rgba' + PERMISSIVE_MATCH4),
    hsl: new RegExp('hsl' + PERMISSIVE_MATCH3),
    hsla: new RegExp('hsla' + PERMISSIVE_MATCH4),
    hsv: new RegExp('hsv' + PERMISSIVE_MATCH3),
    hsva: new RegExp('hsva' + PERMISSIVE_MATCH4),
    hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
    hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
    hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
    hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
  };
})();

// `isValidCSSUnit`
// Take in a single string / number and check to see if it looks like a CSS unit
// (see `matchers` above for definition).
function isValidCSSUnit(color) {
  return !!matchers.CSS_UNIT.exec(color);
}

// `stringInputToObject`
// Permissive string parsing.  Take in a number of formats, and output an object
// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
function stringInputToObject(color) {
  color = color.replace(trimLeft, '').replace(trimRight, '').toLowerCase();
  var named = false;
  if (names[color]) {
    color = names[color];
    named = true;
  } else if (color == 'transparent') {
    return {
      r: 0,
      g: 0,
      b: 0,
      a: 0,
      format: 'name',
    };
  }

  // Try to match string input using regular expressions.
  // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
  // Just return an object and let the conversion functions handle that.
  // This way the result will be the same whether the tinycolor is initialized with string or object.
  var match;
  if ((match = matchers.rgb.exec(color))) {
    return {
      r: match[1],
      g: match[2],
      b: match[3],
    };
  }
  if ((match = matchers.rgba.exec(color))) {
    return {
      r: match[1],
      g: match[2],
      b: match[3],
      a: match[4],
    };
  }
  if ((match = matchers.hsl.exec(color))) {
    return {
      h: match[1],
      s: match[2],
      l: match[3],
    };
  }
  if ((match = matchers.hsla.exec(color))) {
    return {
      h: match[1],
      s: match[2],
      l: match[3],
      a: match[4],
    };
  }
  if ((match = matchers.hsv.exec(color))) {
    return {
      h: match[1],
      s: match[2],
      v: match[3],
    };
  }
  if ((match = matchers.hsva.exec(color))) {
    return {
      h: match[1],
      s: match[2],
      v: match[3],
      a: match[4],
    };
  }
  if ((match = matchers.hex8.exec(color))) {
    return {
      r: parseIntFromHex(match[1]),
      g: parseIntFromHex(match[2]),
      b: parseIntFromHex(match[3]),
      a: convertHexToDecimal(match[4]),
      format: named ? 'name' : 'hex8',
    };
  }
  if ((match = matchers.hex6.exec(color))) {
    return {
      r: parseIntFromHex(match[1]),
      g: parseIntFromHex(match[2]),
      b: parseIntFromHex(match[3]),
      format: named ? 'name' : 'hex',
    };
  }
  if ((match = matchers.hex4.exec(color))) {
    return {
      r: parseIntFromHex(match[1] + '' + match[1]),
      g: parseIntFromHex(match[2] + '' + match[2]),
      b: parseIntFromHex(match[3] + '' + match[3]),
      a: convertHexToDecimal(match[4] + '' + match[4]),
      format: named ? 'name' : 'hex8',
    };
  }
  if ((match = matchers.hex3.exec(color))) {
    return {
      r: parseIntFromHex(match[1] + '' + match[1]),
      g: parseIntFromHex(match[2] + '' + match[2]),
      b: parseIntFromHex(match[3] + '' + match[3]),
      format: named ? 'name' : 'hex',
    };
  }
  return false;
}
function validateWCAG2Parms(parms) {
  // return valid WCAG2 parms for isReadable.
  // If input parms are invalid, return {"level":"AA", "size":"small"}
  var level, size;
  parms = parms || {
    level: 'AA',
    size: 'small',
  };
  level = (parms.level || 'AA').toUpperCase();
  size = (parms.size || 'small').toLowerCase();
  if (level !== 'AA' && level !== 'AAA') {
    level = 'AA';
  }
  if (size !== 'small' && size !== 'large') {
    size = 'small';
  }
  return {
    level: level,
    size: size,
  };
}

export default tinycolor;
